Malicious PDF — malware analysis report

Static analysis result for SHA-256 022bdc7edb2ae89a…

MALICIOUS

PDF

40.9 KB Created: 2020-07-28 20:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2061d22a32e6924e4c95d89d61acb8a SHA-1: feec88c9039ae463d5d4d8008c753763bfca4fa3 SHA-256: 022bdc7edb2ae89ad1cfa6dbf14eeb64824a85e8d61b917a42f6c431127babc4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external PDF files, a technique often used for SEO manipulation or to host malicious content. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=aston+university+sixth+form', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the overall structure suggests a malicious document intended to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=aston+university+sixth+form
    • http://files.themastectomystore.com.au/uploads/1/3/0/8/130814193/bidesezuzanot-digagurelagin-nowikap.pdf
    • http://files.sharonscouts.org/uploads/1/3/2/3/132303310/tanekudumuj.pdf
    • http://files.613studentrentals.com/uploads/1/3/1/1/131163533/9293b421.pdf
    • http://files.romfordhypnobirthing.com/uploads/1/3/1/3/131397971/tutawepuzuza-xevulamikosubub-tibaza.pdf
    • http://files.danielnaujoks.com/uploads/1/3/0/9/130968993/givupuwizid_ridakusopezed_vixopofibole.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/vawejubenabixopedazuvunat.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/35869639581.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/84214185858.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/4902317998.pdf
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/86864821084.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0434/9581/7382/files/pizapowuved.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/34946311230.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/15591684621.pdf
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/83166354229.pdf
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/folami.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006421.bin
dc357014e97dd337909d0d68f5b764c62e3bd8d1b9b920ac00b64fc67fffae3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6421 4864 bytes
font_01_sfnt_off00007487.bin
32201c3b7d62d4c56e63d6baeaf815da0cb3b191b2decf4ae98d55ac11807fd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7487 10000 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.